patch-2.1.32 linux/include/linux/sunrpc/sched.h

• Lines: 171
• Date: Fri Apr 4 11:18:20 1997
• Orig file: v2.1.31/linux/include/linux/sunrpc/sched.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.31/linux/include/linux/sunrpc/sched.h linux/include/linux/sunrpc/sched.h
@@ -0,0 +1,170 @@
+/*
+ * linux/include/linux/sunrpc/sched.h
+ *
+ * Scheduling primitives for kernel Sun RPC.
+ *
+ * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
+ */
+
+#ifndef _LINUX_SUNRPC_SCHED_H_
+#define _LINUX_SUNRPC_SCHED_H_
+
+#include <linux/timer.h>
+#include <linux/tqueue.h>
+#include <linux/sunrpc/types.h>
+
+/*
+ * Define this if you want to test the fast scheduler for async calls.
+ * This is still experimental and may not work.
+ */
+#undef  CONFIG_RPC_FASTSCHED
+
+/*
+ * This is the RPC task struct
+ */
+struct rpc_task {
+	struct rpc_task *	tk_prev;	/* wait queue links */
+	struct rpc_task *	tk_next;
+#ifdef RPC_DEBUG
+	unsigned long		tk_magic;	/* 0xf00baa */
+#endif
+	struct rpc_task *	tk_next_task;	/* global list of tasks */
+	struct rpc_task *	tk_prev_task;	/* global list of tasks */
+	struct rpc_clnt *	tk_client;	/* RPC client */
+	struct rpc_rqst *	tk_rqstp;	/* RPC request */
+	struct rpc_cred *	tk_cred;	/* RPC credentials */
+	int			tk_status;	/* result of last operation */
+	struct rpc_wait_queue *	tk_rpcwait;	/* RPC wait queue we're on */
+
+	/*
+	 * RPC call state
+	 */
+	u32			tk_proc;	/* procedure number */
+	u32 *			tk_buffer;	/* XDR buffer */
+	void *			tk_argp;	/* argument storage */
+	void *			tk_resp;	/* result storage */
+	u8			tk_garb_retry,
+				tk_cred_retry,
+				tk_suid_retry;
+
+	/*
+	 * callback	to be executed after waking up
+	 * action	next procedure for async tasks
+	 * exit		exit async task and report to caller
+	 */
+	void			(*tk_callback)(struct rpc_task *);
+	void			(*tk_action)(struct rpc_task *);
+	void			(*tk_exit)(struct rpc_task *);
+	void *			tk_calldata;
+
+	/*
+	 * tk_timer is used for async processing by the RPC scheduling
+	 * primitives. You should not access this directly unless
+	 * you have a pathological interest in kernel oopses.
+	 */
+	struct timer_list	tk_timer;	/* kernel timer */
+	struct wait_queue *	tk_wait;	/* sync: sleep on this q */
+	unsigned long		tk_timeout;	/* timeout for rpc_sleep() */
+	unsigned short		tk_flags;	/* misc flags */
+#ifdef RPC_DEBUG
+	unsigned short		tk_pid;		/* debugging aid */
+#endif
+};
+#define tk_auth			tk_client->cl_auth
+#define tk_xprt			tk_client->cl_xprt
+
+typedef void			(*rpc_action)(struct rpc_task *);
+
+/*
+ * RPC task flags
+ */
+#define RPC_TASK_RUNNING	0x0001		/* is running */
+#define RPC_TASK_ASYNC		0x0002		/* is an async task */
+#define RPC_TASK_CALLBACK	0x0004		/* invoke callback */
+#define RPC_TASK_SWAPPER	0x0008		/* is swapping in/out */
+#define RPC_TASK_SETUID		0x0010		/* is setuid process */
+#define RPC_TASK_CHILD		0x0020		/* is child of other task */
+#define RPC_CALL_REALUID	0x0040		/* try using real uid */
+#define RPC_CALL_MAJORSEEN	0x0080		/* major timeout seen */
+#define RPC_TASK_ROOTCREDS	0x0100		/* force root creds */
+#define RPC_TASK_DYNAMIC	0x0200		/* task was kmalloc'ed */
+#define RPC_TASK_KILLED		0x0400		/* task was killed */
+
+#define RPC_IS_RUNNING(t)	((t)->tk_flags & RPC_TASK_RUNNING)
+#define RPC_IS_ASYNC(t)		((t)->tk_flags & RPC_TASK_ASYNC)
+#define RPC_IS_SETUID(t)	((t)->tk_flags & RPC_TASK_SETUID)
+#define RPC_IS_CHILD(t)		((t)->tk_flags & RPC_TASK_CHILD)
+#define RPC_IS_SWAPPER(t)	((t)->tk_flags & RPC_TASK_SWAPPER)
+#define RPC_DO_CALLBACK(t)	((t)->tk_flags & RPC_TASK_CALLBACK)
+#define RPC_DO_ROOTOVERRIDE(t)	((t)->tk_flags & RPC_TASK_ROOTCREDS)
+#define RPC_ASSASSINATED(t)	((t)->tk_flags & RPC_TASK_KILLED)
+
+/*
+ * RPC synchronization objects
+ */
+struct rpc_wait_queue {
+	struct rpc_task *	task;
+#ifdef RPC_DEBUG
+	char *			name;
+#endif
+};
+
+#ifndef RPC_DEBUG
+# define RPC_INIT_WAITQ(name)	((struct rpc_wait_queue) { NULL })
+#else
+# define RPC_INIT_WAITQ(name)	((struct rpc_wait_queue) { NULL, name })
+#endif
+
+/*
+ * Function prototypes
+ */
+struct rpc_task *rpc_new_task(struct rpc_clnt *, rpc_action, int flags);
+struct rpc_task *rpc_new_child(struct rpc_clnt *, struct rpc_task *parent);
+void		rpc_init_task(struct rpc_task *, struct rpc_clnt *,
+					rpc_action exitfunc, int flags);
+void		rpc_release_task(struct rpc_task *);
+void		rpc_killall_tasks(struct rpc_clnt *);
+void		rpc_execute(struct rpc_task *);
+void		rpc_run_child(struct rpc_task *parent, struct rpc_task *child,
+					rpc_action action);
+void		rpc_add_wait_queue(struct rpc_wait_queue *, struct rpc_task *);
+void		rpc_remove_wait_queue(struct rpc_task *);
+void		rpc_sleep_on(struct rpc_wait_queue *, struct rpc_task *,
+					rpc_action action, rpc_action timer);
+void		rpc_cond_wait(struct rpc_wait_queue *, struct rpc_task *,
+					unsigned char *,
+					rpc_action action, rpc_action timer);
+void		rpc_wake_up_task(struct rpc_task *);
+void		rpc_wake_up(struct rpc_wait_queue *);
+struct rpc_task *rpc_wake_up_next(struct rpc_wait_queue *);
+void		rpc_wake_up_status(struct rpc_wait_queue *, int);
+void		rpc_add_timer(struct rpc_task *, rpc_action);
+void		rpc_del_timer(struct rpc_task *);
+void		rpc_delay(struct rpc_task *, unsigned long);
+void *		rpc_allocate(unsigned int flags, unsigned int);
+void		rpc_free(void *);
+void		rpciod_up(void);
+void		rpciod_down(void);
+
+extern __inline__ void *
+rpc_malloc(struct rpc_task *task, unsigned int size)
+{
+	return rpc_allocate(task->tk_flags, size);
+}
+
+extern __inline__ void
+rpc_exit(struct rpc_task *task, int status)
+{
+	task->tk_status = status;
+	task->tk_action = NULL;
+}
+
+#ifdef RPC_DEBUG
+extern __inline__ char *
+rpc_qname(struct rpc_wait_queue *q)
+{
+	return q->name? q->name : "unknown";
+}
+#endif
+
+#endif /* _LINUX_SUNRPC_SCHED_H_ */